"Part of the journey is the end," he tells her, adding that he is running out of oxygen.

Meanwhile on Earth, Black Widow (Scarlett Johansson) and Captain America (Chris Evans) are reflecting on the events of Avengers: Infinity War and planning their next moves. We also get a bleak look at some of the other remaining heroes, including Hawkeye (Jeremy Renner), who was offscreen with his family during the previous movie.

The trailer ends on something of a lighter note with an unexpected guest coming to see Black Widow and Captain America: Ant Man (Paul Rudd). In Ant Man and the Wasp, the only Marvel film that has come out since Infinity War, we learn that Scott Lang wasn't with the other heroes because he was tied up fighting his own battles. When his timeline catches up to the end of Infinity War, however, Scott was left all alone.